The United Church of Christ, or the UCC for short, is one of the mainline Protestant denominations with historical roots in the United States of America. We grew out of the Congregational, Reformed, and Lutheran traditions, and we draw upon those traditions in guiding our paths forward.
The UCC formed in 1957 with the merger of two older Protestant denominations: the Evangelical and Reformed Church, on the one hand, and the General Council of the Congregational Christian Churches on the other. This history of joining together helped reaffirm our belief in the oneness of the Body of Christ.
As of 2015, the UCC had about 5,000 churches and more than 1,000,000 adult members. That comes out to about .4 percent of the U.S. population.
We maintain full communion with many other mainline Protestant denominations, and many of our congregations practice open communion. We highly value and emphasize participating in global and ecumenical efforts to further reunite the fractured Body of Christ by building bonds of faith and kinship among Christians around the world.
Our congregations are independent when it comes to questions of doctrine and ministry, so while national organizations may take a particular position on an issue, the individual congregations do not have to take that same position and may end up taking a different one. We are an extremely pluralistic and diverse denomination.